Rename ARM 4.8 compilers...they're now 5.4 compilers.

Aliases the 48s to these, though that's a little disingenuous.

Addresses #155

etc/config/c++.amazon.properties

@@ -1,4 +1,4 @@
-compilers=gcc1204@20480:clang350:clang351:g471:g472:g473:g474:g481:g482:g483:g484:g485:g490:g491:g492:g493:g494:g510:g520:g530:g540:ppcg48:aarchg48:armhfg482:clang37x:clang36x:clang371:clang380:clang381:clang390:g6:g62:mips5:mips5el:mips564:mips564el:g7snapshot:icc16:icc17
+compilers=gcc1204@20480:clang350:clang351:g471:g472:g473:g474:g481:g482:g483:g484:g485:g490:g491:g492:g493:g494:g510:g520:g530:g540:ppcg48:aarchg54:armhfg54:clang37x:clang36x:clang371:clang380:clang381:clang390:g6:g62:mips5:mips5el:mips564:mips564el:g7snapshot:icc16:icc17
 defaultCompiler=g62
 ###############################
 # GCC for x86
@@ -98,14 +98,16 @@ compiler.ppcg48.needsMulti=false
 
 ###############################
 # GCC for ARM
-compiler.aarchg48.exe=/usr/bin/aarch64-linux-gnu-g++
-compiler.aarchg48.name=ARM64 gcc 4.8
-compiler.armhfg482.exe=/usr/bin/arm-linux-gnueabihf-g++
-compiler.armhfg482.name=ARM gcc 4.8.2
-compiler.armhfg482.supportsBinary=false
-compiler.aarchg48.supportsBinary=false
-compiler.armhfg482.needsMulti=false
-compiler.aarchg48.needsMulti=false
+compiler.aarchg54.exe=/usr/bin/aarch64-linux-gnu-g++
+compiler.aarchg54.name=ARM64 gcc 5.4
+compiler.aarchg54.supportsBinary=false
+compiler.aarchg54.needsMulti=false
+compiler.aarchg54.alias=aarchg48
+compiler.armhfg54.exe=/usr/bin/arm-linux-gnueabihf-g++
+compiler.armhfg54.name=ARM gcc 5.4
+compiler.armhfg54.supportsBinary=false
+compiler.armhfg54.needsMulti=false
+compiler.armhfg54.alias=armhfg482
 
 ###############################
 # GCC for MIPS