Kernel/userspace: rework floating point math

SSE is now unconditionally enabled any where and most of math.h is now
actually implemented. using __builtin_<func> lead to many hangs where
the builtin function would just call itself.

userspace/libraries/CMakeLists.txt

@@ -21,10 +21,5 @@ foreach(library ${USERSPACE_LIBRARIES})
 		target_link_options(${library_lower} PRIVATE -nolibc)
 		# Default compile options
 		target_compile_options(${library_lower} PRIVATE -g -O2 -Wall -Wextra -Werror)
-
-		target_compile_definitions(${library_lower} PRIVATE __enable_sse=${BANAN_ENABLE_SSE})
-		if (NOT BANAN_ENABLE_SSE)
-			target_compile_options(${library_lower} PRIVATE -mno-sse -mno-sse2)
-		endif ()
 	endif()
 endforeach()