Fixed cmake warnings

lib/irrlicht/CMakeLists.txt

@@ -1,5 +1,4 @@
 # CMakeLists.txt for Irrlicht in STK
-project(stkirrlicht)
 find_package(PNG REQUIRED)
 find_package(JPEG REQUIRED)
 

lib/jpeglib/CMakeLists.txt

@@ -1,5 +1,4 @@
 cmake_minimum_required(VERSION 2.4.4)
-project(jpeglib C)
 
 SET(JPEG_SRCS
  jaricom.c
@@ -49,4 +48,4 @@ SET(JPEG_SRCS
  jquant2.c
  jutils.c)
 
-add_library(jpeglib STATIC ${JPEG_SRCS})
+add_library(jpeglib STATIC ${JPEG_SRCS})

lib/libpng/CMakeLists.txt

@@ -30,7 +30,6 @@ if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE)
   endif()
 endif()
 
-project(libpng C)
 enable_testing()
 
 set(PNGLIB_MAJOR 1)
@@ -211,7 +210,7 @@ endif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
 # we use the same files like ./configure, so we have to set its vars
 # Only do this on Windows for Cygwin - the files don't make much sense outside
 # a UNIX look alike
-if(NOT WIN32 OR CYGWIN OR MINGW) 
+if(NOT WIN32 OR CYGWIN OR MINGW)
   set(prefix      ${CMAKE_INSTALL_PREFIX})
   set(exec_prefix ${CMAKE_INSTALL_PREFIX})
   set(libdir      ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})

lib/zlib/CMakeLists.txt

@@ -1,8 +1,6 @@
 cmake_minimum_required(VERSION 2.4.4)
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
 
-project(zlib C)
-
 set(VERSION "1.2.7")
 
 set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")