Rename tests/ -> test/ and update internal refs.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Makefile.am

@@ -4,7 +4,7 @@ doc_DATA            = README.md LICENSE ChangeLog.md
 EXTRA_DIST          = README.md LICENSE ChangeLog.md
 pkgconfigdir        = $(libdir)/pkgconfig
 pkgconfig_DATA      = libite.pc
-SUBDIRS             = src tests
+SUBDIRS             = src test
 
 ## Check if tagged in git
 release-hook:

configure.ac

@@ -5,7 +5,7 @@ AM_SILENT_RULES([yes])
 
 AC_CONFIG_SRCDIR(src/lite.h)
 AC_CONFIG_HEADERS(config.h)
-AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile libite.pc])
+AC_CONFIG_FILES([Makefile src/Makefile test/Makefile libite.pc])
 AC_CONFIG_MACRO_DIR([m4])
 
 AC_PROG_CC

debian/copyright

@@ -124,5 +124,5 @@ Files: yorn.c
 Copyright: 2009-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
-Files: tests/*.c
+Files: test/*.c
 License: public-domain