Several Bugfixes and Improvements

• Fix bug in parser in bash
• Fix bug in pipe.c where it clashes with normal file inode
• Fix error handling in execve()
• Fix bug in alloc_block
• Restructure include path
• Introduce gcc to improve linting of code
• Introduce unit tests auto generated by utest_generator.py
• Improved kdbg.py
• Improved libs linker
• Improved makefile build speed