add homebrew to Tex requirement

Closes #29834.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
unifdef 2.10

Closes #29750.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
unifdef: quotes
test: improve docs for when using HEAD or similar flags

Closes #29791.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
add --devel to fetch docs
reword test docs
regenerate manual