Solution: remove manually added unversioned Provide, as it is generated
automatically.

[   77s] ERROR: /.build.packages/RPMS/i586/generator-scripting-language-1510830494.60d5c103-25.1.i586.rpm
[   77s]        has an unversioned self-provide.
[   77s]        Remove it, self-provides are done automatically.

Solution: remove strict dependency on pcre-devel, older versions work
as well

Solution: let the build system generate it automatically

Solution: don't explicitly depend on bash and GCC, other compilers
and shells can be used too and are defined in the build environment

Solution: fix it

Problem: RPM specfile should want proper dependencies

Problem: version 4.1.4 still in packaging metadata

Solution: Update PCRE requirement to v8+, require a shell and compiler for build, and PCRE for runtime

Signed-off-by: Jim Klimov <EvgenyKlimov@eaton.com>

Solution: update to 4.1.5 per release tagged two months ago ;)

Signed-off-by: Jim Klimov <EvgenyKlimov@eaton.com>

Problem: there is no Jenkinsfile

Problems: build broken on sparc64 and mips64el

Problem: get_abbrev_day/month return local variable

Solution: change the functions to take in the destination buffer and use
it instead of returning a local variable.

Solution: add definitions to prelude

Solution: add definitions to prelude

Solution: add MIT old-style license to packaging/debian/copyright

Problem: some systems can't find pcre.h

Solution: help by pre-populating a CPPFLAGS value

Signed-off-by: Jim Klimov <EvgenyKlimov@eaton.com>

Problem: no test for issue #11

Solution: add teststr.gsl to make check and add non-matching search_replace to test

See #11

Problem: memory leak if string.search_replace has nothing to replace

Solution: use mem_strdup instead of strdup

Fixes #11

Problem: Build can't always reasonable run binary

Solution: Build the test stage instead, since that's where
the ./gsl -v build was moved

Solution: Put the ./gsl -v  call in check: and make check: depend
on everything: to make it easy to see in Travis.

Problem: gcc is not always called gcc

Solution: Query the --version string of whatever CCNAME happens to
be. This will catch such misfits as cross compilers, and places
where gcc is invoked as plain old cc.

Problems: more improvements needed for debian packaging

Solution: list them under BSD-3-Clause

Solution: remove all mentions of pcre/*

Solution: add them

Solution: further simplify it using the .install files

Solution: run dh with --parallel

Solution: further simplify it

Problem: old and bugged PCRE version embedded

Solution: remove it. All supported builds work with a system distributed
version of PCRE, so it's not necessary anymore.
Fixes #1

Solution: use system header instead