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 34 minutes 33 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Hamara Sugam Amd64
passed #1047
allowed to fail
build-hamara-sugam-amd64

16:25

 
  Build Hamara Sugam I386
passed #1048
build-hamara-sugam-i386

18:07