Minor Cleanups (#1321)

* added CLion project folder to .gitignore

* adjusted project name in CMakeLists.txt

* avoid warning when compiling "Debug" with Visual Studio via CMake

There was a GCC-style compiler flag in the common flags in compileroptions.cmake which caused the following warning:
cl : Command line warning D9002 : ignoring unknown option '-O0'

* compileroptions.cmake: restored original formatting

.gitignore

@@ -105,3 +105,5 @@ snap/.snapcraft
 man/manual.log
 man/manual.tex
 
+# CLion
+.idea

CMakeLists.txt

@@ -1,4 +1,4 @@
-project(CppCheck)
+project(Cppcheck)
 cmake_minimum_required(VERSION 2.8.11)
 
 include(GNUInstallDirs)

cmake/compileroptions.cmake

@@ -1,6 +1,6 @@
 set(EXTRA_C_FLAGS "")
 set(EXTRA_C_FLAGS_RELEASE "-DNDEBUG")
-set(EXTRA_C_FLAGS_DEBUG "-DDEBUG -O0")
+set(EXTRA_C_FLAGS_DEBUG "-DDEBUG")
 
 if (USE_CLANG)
     set (CMAKE_C_COMPILER_ID            "Clang")
@@ -104,6 +104,8 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR
    endif()
 
    set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Wall -std=c++0x")
+   
+   set(EXTRA_C_FLAGS_DEBUG "${EXTRA_C_FLAGS_DEBUG} -O0")
 
 endif()