hgmerge: fix diff+patch detection; cleanups
Details:
- actually show help message when no tools are found
- whitespace cleanup (stupid emacs)
- quote more variables
- simplify merge/diff3 error handling
#!/bin/shmkdir acd ahg initecho foo > bhg add bhg ci -m "b" -d "0 0"chmod -w .hgcd ..hg clone a bchmod +w a/.hg # let test clean upcd bhg verify