Install .gitignore file to help those using svn via git.

.gitignore

@@ -0,0 +1,47 @@
+INSTALL
+Makefile.in
+aclocal.m4
+ar-lib
+compile
+config.guess
+config.sub
+configure
+depcomp
+install-sh
+ltmain.sh
+m4/
+missing
+test-driver
+
+Makefile
+config.log
+config.status
+libpcre2-*.pc
+libtool
+pcre2-config
+src/.deps
+src/config.h
+src/pcre2.h
+src/stamp-h1
+
+.libs
+*.o
+*.lo
+*.a
+*.la
+src/.dirstamp
+src/pcre2_chartables.c
+
+pcre2grep
+pcre2test
+pcre2_jit_test
+
+RunGrepTest.log
+RunGrepTest.trs
+RunTest.log
+RunTest.trs
+pcre2_jit_test.log
+pcre2_jit_test.trs
+test-suite.log
+
+*~

ChangeLog

@@ -143,6 +143,9 @@ applies to both interpretive pcre2_match() and to pcre2_dfa_match().
 minimum length zero, there is no need to scan any subsequent branches (a small 
 compile-time performance improvement).
 
+31. Installed a .gitignore file on a user's suggestion. When using the svn
+repository with git (through git svn) this helps keep it tidy.
+
 
 Version 10.33 16-April-2019
 ---------------------------