travis-ci: consolidate travis configuration

Author: ralphlange

.travis.yml

@@ -18,8 +18,8 @@ script:
 env:
  - BRCORE=master BRLIBCOM=master BRPVD=master
  - CMPLR=clang
- - EXTRA="CMD_CXXFLAGS=-std=c++11"
- - CMPLR=clang EXTRA="CMD_CXXFLAGS=-std=c++11"
+ - USR_CXXFLAGS=-std=c++11
+ - CMPLR=clang USR_CXXFLAGS=-std=c++11
  - WINE=32 TEST=NO STATIC=YES
  - WINE=32 TEST=NO STATIC=NO
  - RTEMS=4.10 TEST=NO