Evan 1ccf2ca2f4 modules: Add newlen == 0 handling to RM_StringTruncate (#3717) (#3718) ...

Previously, passing 0 for newlen would not truncate the string at all.
This adds handling of this case, freeing the old string and creating a new empty string.

Other changes:
- Move `src/modules/testmodule.c` to `tests/modules/basics.c`
- Introduce that basic test into the test suite
- Add tests to cover StringTruncate
- Add `test-modules` build target for the main makefile
- Extend `distclean` build target to clean modules too

2021-06-22 12:26:48 +03:00

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