Add README, print arch to dist pkg, optimize for size

Makefile

@@ -9,7 +9,7 @@ MD5SUM=md5sum -b
 TAR=tar
 INSTALL_ROOT=/usr/local
 
-CFLAGS=-Wall -Werror -pedantic -std=c89 -fPIC -fmax-errors=1 -DPROJECT_VERSION=$(PROJECT_VERSION) -D_POSIX_C_SOURCE=200112L
+CFLAGS=-Wall -Werror -pedantic -std=c89 -fPIC -Os -fmax-errors=1 -DPROJECT_VERSION=$(PROJECT_VERSION) -D_POSIX_C_SOURCE=200112L
 
 LDFLAGS=-Wl,-s,--as-needed,--gc-sections,-pie
 
@@ -47,6 +47,7 @@ dist/getaddrinfo-$(PROJECT_VERSION)+$(ARCH).tgz: build/bin/getaddrinfo
 	$(MKDIR_P) "$(shell dirname "$@")" build/tar build/tar/bin
 	$(COPYTO) build/tar/bin/. build/bin/getaddrinfo
 	echo "version=$(PROJECT_VERSION)" > build/tar/METADATA.INI
+	echo "arch=$(ARCH)" >> build/tar/METADATA.INI
 	echo "builtAt=$(shell date -u +%Y-%m-%dT%H:%M:%SZ)" >> build/tar/METADATA.INI
 	$(TAR) --owner=0 --group=0 -czf "$@" -C build/tar METADATA.INI bin/getaddrinfo
 

README.txt

@@ -0,0 +1,7 @@
+
+getaddrinfo-cli
+===============
+
+Simple commandline frontend to getaddrinfo
+(https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html).
+