test-merge-tool: Make sure no hgmerge can be found in $PATH
The merge tool selecting algorithm is hardcoded to look for hgmerge in $PATH
before it falls back to use internal merge. This fixes the test for this
fallback to be tolerant to existing hgmerges.
adding src/a.c
moving src/a.c to source/a.c
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
created new head
? src/a.o
merging src/a.c and source/a.c to source/a.c
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
M source/a.c
R src/a.c
? source/a.o