netbeans: additional patching

- Patches a new awk call in the Netbeans 8 launcher, to fix a warning
  on startup:

    /nix/store/...-netbeans-8.0.2/netbeans/platform/lib/nbexec: line 201:
    /usr/bin/awk: No such file or directory

- Patches a bunch of sh/perl/python shebangs.