build,cmake: rename libjson-c-static.a to libjson-c.a

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

.gitignore

@@ -105,5 +105,5 @@
 /CMakeFiles
 /cmake_install.cmake
 /include
-/libjson-c-static.a
+/libjson-c.a
 /libjson-c.so

CMakeLists.txt

@@ -67,6 +67,7 @@ add_library(json-c-static
 )
 
 set_property(TARGET json-c PROPERTY C_STANDARD 99)
+set_target_properties(json-c-static PROPERTIES OUTPUT_NAME json-c)
 
 install(TARGETS json-c json-c-static
     RUNTIME DESTINATION bin