Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibC/errno_numbers.h

@@ -0,0 +1,74 @@
+#pragma once
+
+#define ESUCCESS 0
+#define EPERM 1
+#define ENOENT 2
+#define ESRCH 3
+#define EINTR 4
+#define EIO 5
+#define ENXIO 6
+#define E2BIG 7
+#define ENOEXEC 8
+#define EBADF 9
+#define ECHILD 10
+#define EAGAIN 11
+#define ENOMEM 12
+#define EACCES 13
+#define EFAULT 14
+#define ENOTBLK 15
+#define EBUSY 16
+#define EEXIST 17
+#define EXDEV 18
+#define ENODEV 19
+#define ENOTDIR 20
+#define EISDIR 21
+#define EINVAL 22
+#define ENFILE 23
+#define EMFILE 24
+#define ENOTTY 25
+#define ETXTBSY 26
+#define EFBIG 27
+#define ENOSPC 28
+#define ESPIPE 29
+#define EROFS 30
+#define EMLINK 31
+#define EPIPE 32
+#define ERANGE 33
+#define ENAMETOOLONG 34
+#define ELOOP 35
+#define EOVERFLOW 36
+#define EOPNOTSUPP 37
+#define ENOSYS 38
+#define ENOTIMPL 39
+#define EAFNOSUPPORT 40
+#define ENOTSOCK 41
+#define EADDRINUSE 42
+#define EWHYTHO 43
+#define ENOTEMPTY 44
+#define EDOM 45
+#define ECONNREFUSED 46
+#define EADDRNOTAVAIL 47
+#define EISCONN 48
+#define ECONNABORTED 49
+#define EALREADY 50
+#define ECONNRESET 51
+#define EDESTADDRREQ 52
+#define EHOSTUNREACH 53
+#define EILSEQ 54
+#define EMSGSIZE 55
+#define ENETDOWN 56
+#define ENETUNREACH 57
+#define ENETRESET 58
+#define ENOBUFS 59
+#define ENOLCK 60
+#define ENOMSG 61
+#define ENOPROTOOPT 62
+#define ENOTCONN 63
+#define EWOULDBLOCK 64
+#define EPROTONOSUPPORT 65
+#define EDEADLK 66
+#define ETIMEDOUT 67
+#define EPROTOTYPE 68
+#define EINPROGRESS 69
+#define ENOTHREAD 70
+#define EMAXERRNO 71