new clang, trunk builds

etc/config/c++.amazon.properties

@@ -46,11 +46,11 @@ compiler.g62.exe=/opt/compiler-explorer/gcc-6.2.0/bin/g++
 compiler.g62.name=x86-64 gcc 6.2
 compiler.g63.exe=/opt/compiler-explorer/gcc-6.3.0/bin/g++
 compiler.g63.name=x86-64 gcc 6.3
-compiler.g7snapshot.exe= /opt/compiler-explorer/gcc-7-20161113/bin/g++
+compiler.g7snapshot.exe= /opt/compiler-explorer/gcc-snapshot/bin/g++
 compiler.g7snapshot.name=x86-64 gcc 7 (snapshot)
 
 # Clang for x86
-group.clang.compilers=clang350:clang351:clang37x:clang36x:clang371:clang380:clang381:clang390
+group.clang.compilers=clang350:clang351:clang37x:clang36x:clang371:clang380:clang381:clang390:clang391:clang_trunk
 group.clang.intelAsm=-masm=intel
 group.clang.options=--gcc-toolchain=/opt/compiler-explorer/gcc-6.2.0
 compiler.clang350.exe=/usr/bin/clang++-3.5
@@ -71,6 +71,10 @@ compiler.clang381.exe=/opt/compiler-explorer/clang+llvm-3.8.1-x86_64-linux-gnu-u
 compiler.clang381.name=x86-64 clang 3.8.1
 compiler.clang390.exe=/opt/compiler-explorer/clang+llvm-3.9.0-x86_64-linux-gnu-ubuntu-16.04/bin/clang++
 compiler.clang390.name=x86-64 clang 3.9.0
+compiler.clang391.exe=/opt/compiler-explorer/clang-3.9.1/bin/clang++
+compiler.clang391.name=x86-64 clang 3.9.1
+compiler.clang_trunk.exe=/opt/compiler-explorer/clang-3.9.1/bin/clang++
+compiler.clang_trunk.name=x86-64 clang (trunk)
 
 # icc for x86
 group.icc.compilers=icc16:icc17