Merge branch 'cc/starts-n-ends-with'

Remove a few duplicate implementations of prefix/suffix comparison
functions, and rename them to starts_with and ends_with.

* cc/starts-n-ends-with:
  replace {pre,suf}fixcmp() with {starts,ends}_with()
  strbuf: introduce starts_with() and ends_with()
  builtin/remote: remove postfixcmp() and use suffixcmp() instead
  environment: normalize use of prefixcmp() by removing " != 0"

pathspec.c

@@ -154,7 +154,7 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
 					magic |= pathspec_magic[i].bit;
 					break;
 				}
-				if (!prefixcmp(copyfrom, "prefix:")) {
+				if (starts_with(copyfrom, "prefix:")) {
 					char *endptr;
 					pathspec_prefix = strtol(copyfrom + 7,
 								 &endptr, 10);