fix Issue 10133 - ICE for templated static conditional lambda
[Improve] Remove hacks for access check inside template constraint
[Improve] Relax restrictions on issue 6538 and 9361

Now pseudo symbols are placed in emulated scopes, and taking them by alias parameter is allowed.
[Improve] Make diagnostic message more informative by using toPrettyChars()

Segfault issue is now resolved.
Merge pull request #3121 from ibuclaw/subsitute

Fix CppMangleVisitor::substitute and Remove CppMangleVisitor::exist
Remove Identifiers that are no longer referenced
fix Issue 11944 - ICE(expression.c) Assertion `f' failed.
Merge pull request #3125 from 9rnsr/fix11944

Issue 11944 - ICE(expression.c) Assertion `f' failed.
Fix Issue 11955 - Aliased types not accepted in foreach over range of tuple

Run semantic on the type before attempting implicit conversions.
Merge pull request #3127 from yebblies/issue11955

Issue 11955 - Aliased types not accepted in foreach over range of tuple
Merge pull request #3124 from yebblies/deadid

[cleanup] Remove Identifiers that are no longer referenced
Merge pull request #3117 from yebblies/opId

[refactor] Refactor opId, opId_r, and isCommutative into free functions
add .travis.yml to suppress Travis-CI testing on master

- Need a .travis.yml file in every branch
- only enable testing for dmd-1.x
- http://docs.travis-ci.com/user/build-configuration/#White--or-blacklisting-branches
Merge pull request #3129 from MartinNowak/disableTravis

add .travis.yml to suppress Travis-CI testing on master
Fix Issue 11957 - extern inside function scope ignored
Fix Issue 10221 - foreach(char c; 0..256) doesn't work even though the upper bound is 255
fix Issue 11956 - dmd doesn't lookup /etc/dmd.conf

- define variable in src/posix.mak instead of posix.mak
- fix quotes
- assert that SYSCONFDIR was set to a non-empty string
Merge pull request #3130 from yebblies/issue11957

Issue 11957 - extern inside function scope ignored
Remove 'awful hack' introduced when fixing issue 3029
fix Issue 11963 - ICE(parse.c) Parser crash