Added gitignore rules to files which are generated after running the mkbuild script.

- This helps make sure that the build files don't get tracked in the git tracker.
2 jobs from master in 37 minutes 12 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Hamara Sugam Amd64
passed #1041
allowed to fail
build-hamara-sugam-amd64

17:46

 
  Build Hamara Sugam I386
passed #1042
build-hamara-sugam-i386

19:26