Problem: Cannot get the search statistics.
Solution: Add the searchcount() function. (Fujiwara Takuya, closesvim/vim#4446)
e8f5ec0d30
Additional changes:
- Tests weren't passing because the test ran assuming the cursor was at
start of buffer but append() left the cursor at end of buffer .
So cursor is moved to start of buffer after append.
- searchcount() added to list of builtin functions.
e498f265f4
