create mode 100644 lib/c/common.zig
 create mode 100644 lib/c/string.zig
 delete mode 100644 lib/libc/musl/src/string/strcmp.c
 delete mode 100644 lib/libc/musl/src/string/strlen.c
 delete mode 100644 lib/libc/musl/src/string/strncmp.c