KWSys SystemInformation: No SA_RESTART on QNX

QNX not support SA_RESTART signal:

 /* #define SA_RESTART 0x0040 (not supported yet) */

Use it in SystemInformation only if it is defined.
cmTarget: Drop internal cache of link interface usage requirements

These use a huge amount of memory that accumulates as generation
proceeds.  On the Unix Makefiles generator, only GetIncludeDirectories
and GetCompileDefinitions are even called more than once per target
(once for build files, once for dependency scanning preprocessor info).
Another approach will be needed to avoid duplicate computation in the
cases where it does occur.
cmTarget: Drop internal cache of build properties

These use a huge amount of memory that accumulates as generation
proceeds.  On the Unix Makefiles generator, only GetIncludeDirectories
and GetCompileDefinitions are even called more than once per target
(once for build files, once for dependency scanning preprocessor info).
Another approach will be needed to avoid duplicate computation in the
cases where it does occur.
genex-head-sensitive-conditions
CMake Nightly Date Stamp
CMake Nightly Date Stamp
CMake Nightly Date Stamp
Merge topic 'update-kwsys'

6f3e094e Merge branch 'upstream-kwsys' into update-kwsys
d4d1b7f7 KWSys 2014-07-18 (65b36ede)
Merge topic 'fix-QCC-compile-flags'

3151024d QNX: Add missing flags for configurations and artifact creation.
Tests/CTestTestMemcheck: Fix malloc guard location
Merge topic 'fix_guard_malloc_forbc' into next

ffd40461 Tests/CTestTestMemcheck: Fix malloc guard location
Merge branch 'master' into next
Merge topic 'backport-kwsys-qnx-fix' into next

cc3248f4 KWSys SystemInformation: No SA_RESTART on QNX
Merge topic 'backport-kwsys-qnx-fix'

cc3248f4 KWSys SystemInformation: No SA_RESTART on QNX
Merge branch 'master' into next
Merge topic 'target-drop-build-setting-cache' into next

c3de083e genex-head-sensitive-conditions
e5821c20 cmTarget: Drop internal cache of build properties
bbea91c7 cmTarget: Drop internal cache of link interface usage requirements
Revert topic 'target-drop-build-setting-cache'

It contained changes not ready for testing.
Merge topic 'target-drop-build-setting-cache' into next

b154a32d Revert topic 'target-drop-build-setting-cache'
cmTarget: Drop internal cache of link interface usage requirements

These use a huge amount of memory that accumulates as generation
proceeds.  On the Unix Makefiles generator, only GetIncludeDirectories
and GetCompileDefinitions are even called more than once per target
(once for build files, once for dependency scanning preprocessor info).
Another approach will be needed to avoid duplicate computation in the
cases where it does occur.
cmTarget: Drop internal cache of build properties

These use a huge amount of memory that accumulates as generation
proceeds.  On the Unix Makefiles generator, only GetIncludeDirectories
and GetCompileDefinitions are even called more than once per target
(once for build files, once for dependency scanning preprocessor info).
Another approach will be needed to avoid duplicate computation in the
cases where it does occur.