Bug #49210 Enable MTR timeout configuration through environment variables

Description:
It should be possible to configure test case and test suite timeouts with environment variables. This is needed because there is currently no way to increase the timeout for specific test runs in pushbuild, e.g. valgrind runs.

How to repeat:
It's a feature request. Observe that the feature is not present.

Suggested fix:
Introduce MTR_TESTCASE_TIMEOUT and MTR_SUITE_TIMEOUT environment variables that override the default settings for --testcase-timeout and --suite-timeout. 
This is needed in mtrv1 for mysql 5.0 as well.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/92867

2866 Bjorn Munch	2009-12-04
      Bug #49210 Enable MTR timeout configuration through environment variables
      Define env. vars for all the timeout settings

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/97853

2841 Bjorn Munch	2010-01-22
      Bug #49210 Enable MTR timeout configuration through environment variables
      Define env. vars for both timeout settings
      This patch is for 5.0 (mtr v1); it does not replace 
         the previous patch which is for 5.1 (mtr v2)

Looks like it could work.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/98065

2885 Bjorn Munch	2010-01-25
      Bug #49210 Enable MTR timeout configuration through environment variables
      Define env. vars for both timeout settings
      Also incorporated 5.0 patch into mtr version 1

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/98343

2842 Bjorn Munch	2010-01-27
        Bug #49210 Enable MTR timeout configuration through environment variables
        Define env. vars for both timeout settings
        This patch is for 5.0 (mtr v1) and should replaces for 5.1 up

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/98356

3338 Bjorn Munch	2010-01-27 [merge]
      Bug #49210 Enable MTR timeout configuration through environment variables
      Define env. vars for both timeout settings
      Also incorporated 5.0 patch into mtr version 1

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/98361

3339 Bjorn Munch	2010-01-27 [merge]
      Bug #49210 Enable MTR timeout configuration through environment variables
      Define env. vars for both timeout settings
      Also incorporated 5.0 patch into mtr version 1

Pushed to 5.0-bugteam, 5.1-bugteam, mysql-pe

Pushed into 5.0.91 (revid:joro@sun.com-20100204101329-4wg1ktw00vk63o8l) (version source revid:bjorn.munch@sun.com-20100127142141-n5j4snngwwmc706e) (merge vers: 5.0.90) (pib:16)

Pushed into 5.1.44 (revid:joro@sun.com-20100204101444-2j32mhqroo0iiio6) (version source revid:aelkin@mysql.com-20100128102219-jv0ng84taiexx2xb) (merge vers: 5.1.43) (pib:16)

Pushed into mysql-next-mr (revid:alik@sun.com-20100204063540-9czpdmpixi3iw2yb) (version source revid:alik@sun.com-20100130220650-3md8m8w9frcwjj9f) (pib:16)

Pushed into 6.0.14-alpha (revid:alik@sun.com-20100205113942-oqovjy0eoqbarn7i) (version source revid:alik@sun.com-20100204064210-ljwanqvrjs83s1gq) (merge vers: 6.0.14-alpha) (pib:16)

Pushed into 5.5.2-m2 (revid:alik@sun.com-20100203172258-1n5dsotny40yufxw) (version source revid:alik@sun.com-20100130191336-i53i9wx67n81ridm) (merge vers: 5.5.2-m2) (pib:16)

Noted in 5.0.91, 5.1.44, 5.5.2, 6.0.14 changelogs.

mysql-test-run.pl now recognizes the MTR_TESTCASE_TIMEOUT,
MTR_SUITE_TIMEOUT, MTR_SHUTDOWN_TIMEOUT, and MTR_START_TIMEOUT
environment variables. If they are set, their values are used to set
the --testcase-timeout, --suite-timeout, --shutdown-timeout, and
--start-timeout options, respectively. 

Setting report to Need Merge pending push to Celosia.

Pushed into 5.1.44-ndb-7.0.14 (revid:jonas@mysql.com-20100312135944-t0z8s1da2orvl66x) (version source revid:jonas@mysql.com-20100312115609-woou0te4a6s4ae9y) (merge vers: 5.1.44-ndb-7.0.14) (pib:16)

Pushed into 5.1.44-ndb-6.2.19 (revid:jonas@mysql.com-20100312134846-tuqhd9w3tv4xgl3d) (version source revid:jonas@mysql.com-20100312060623-mx6407w2vx76h3by) (merge vers: 5.1.44-ndb-6.2.19) (pib:16)

Pushed into 5.1.44-ndb-6.3.33 (revid:jonas@mysql.com-20100312135724-xcw8vw2lu3mijrhn) (version source revid:jonas@mysql.com-20100312103652-snkltsd197l7q2yg) (merge vers: 5.1.44-ndb-6.3.33) (pib:16)

Fixed in earlier 5.1.x, 5.5.x.