CMake Nightly Date Stamp
CMake: Skip empty link.txt lines (#13845)

In the implementation of "cmake -E cmake_link_script", skip lines from
the input file that are empty or contain only whitespace.  Do not try to
run a child with no command line.
Merge topic 'fix-empty-link-line-crash' into next

8ff1d47 CMake: Skip empty link.txt lines (#13845)
5929086 CMake Nightly Date Stamp
Merge topic 'fix-imported-lib-linking-test'

93034a8 Fix linking to imported libraries test.
Merge topic 'LINK_INTERFACE_LIBRARIES-genex'

77d2646 Allow generator expressions in LINK_INTERFACE_LIBRARIES.
94aeaf7 Split LINK_INTERFACE_LIBRARIES export handling into dedicated method.
a3aedb8 Split the generator expression before extracting targets.
b6036d1 Extract the AddTargetNamespace method.
cb1afbf Don't pass a position when determining if a target name is a literal.
f99196d Add cmGeneratorExpression::Split() API.
Merge branch 'master' into next
KWSys 2013-01-10 (608d6b47)

Extract upstream KWSys using the following shell commands.

$ git archive --prefix=upstream-kwsys/ 608d6b47 | tar x
$ git shortlog --no-merges --abbrev=8 --format='%h %s' fc60c8b8..608d6b47
Rolf Eike Beer (6):
      297758a5 SystemInformation: fix conversion warning
      79ef34ef SystemInformation: fix calling kwsysProcess_WaitForData()
      f1068caf SystemInformation: speed up copying process data
      7dfc27d5 SystemInformation: check CPU vendor and SSE support on OpenBSD
      494d9d7a SystemInformation: get stepping code on Intel Macs
      608d6b47 SystemInformation: determine processor features on Intel Macs

Change-Id: I7f5bc5b7af2bf7d4e5c1ee291c286add0f17a7d5
Merge branch 'upstream-kwsys' into update-kwsys
Merge topic 'update-kwsys' into next

6f57a90 Merge branch 'upstream-kwsys' into update-kwsys
6318834 KWSys 2013-01-10 (608d6b47)
Add a way to check INTERFACE user property compatibility.
Add a test for the interfaces in targets exported from the build tree.
Merge topic 'test-export-iface-genex' into next

0de21a3 Add a test for the interfaces in targets exported from the build tree.
Merge topic 'compatible-INTERFACE-user-properties' into next

e5314d1 Add a way to check INTERFACE user property compatibility.
Add documentation.
Merge topic 'compatible-INTERFACE-user-properties' into next

15ba6e9 Add documentation.
Add a way to check INTERFACE user property compatibility.
Merge topic 'compatible-INTERFACE-user-properties' into next

5358064 Add a way to check INTERFACE user property compatibility.
Add missing return to method.
Merge topic 'compatible-INTERFACE-user-properties' into next

b8a756e Add missing return to method.