Added Makefiles and fixes for x86

Only included platform.h for ARM targets
*_trigger functions are only used on arm targets
A few other changes for specific benchmarks
Fixed 2dfir correctness

Both image and array were being incorrectly initialised
Now array is just set to surround an image of 1s with 0s
Make makefiles for flexible

Only common.mk needs to be changed to add new architectures
Also added a script for making template makefiles
Added .gitignore
Added beginnings of a README
Added ability to verify benchmarks

Added gdb scripts for verifying on x86 architectures
Edited some benchmarks to save output if a VERIFY build
Removed old README