Fix travis builds.

* Start using g++ 4.8 and clang.
* Fix missing -std=c++11 flags.
* Builds which failed torched remaining builds, which meant more iteration.
  Now, they recover and continue correctly.
* Remove some clang compiler warnings generated by Qt files out of my control.

1 files changed, 2 insertions, 0 deletions

diff --git a/gaddagize/gaddagize.pro b/gaddagize/gaddagize.pro
index 63bfb65..5998fbf 100755
--- a/gaddagize/gaddagize.pro
+++ b/gaddagize/gaddagize.pro
@@ -17,6 +17,8 @@ release {
   OBJECTS_DIR = obj/release
 }
 
+QMAKE_CXXFLAGS += -std=c++11 -Wno-unknown-warning-option -Wno-deprecated-register
+
 # Input
 SOURCES += gaddagize.cpp