refactor: c/ -> usr/, compiled program blobs out of the source tree

Userland sources live in usr/ (fits the Unix theme better than 'c').
SDCC output .bin blobs land in build/usr/ with the other build artifacts
instead of littering the source dir; programs.asm INCBINs them from there.
Byte-identical ROM.

1 files changed, 0 insertions, 28 deletions

diff --git a/c/head.c b/c/head.c
deleted file mode 100644
index 3298e54..0000000
--- a/c/head.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#include "gbos.h"
-/* head [-n N] [N] [file]: first N lines of a file or stdin (default 10). */
-void main(void) {
-    char *argv[8];
-    unsigned char argc = argv_parse(argv, 8);
-    char *nv = optval(argv, argc, 'n');
-    unsigned char n = 10, lines = 0, i, fd = NOFD;
-    char *fname = 0;
-    int ch;
-    if (nv) n = atou(nv);
-    for (i = 0; i < argc; i++) {
-        if (argv[i][0] == '-') continue;
-        if (nv == argv[i]) continue;
-        if (!nv && argv[i][0] >= '0' && argv[i][0] <= '9') { n = atou(argv[i]); continue; }
-        fname = argv[i]; break;
-    }
-    if (fname) {
-        fd = open(fname, O_READ);
-        if (fd > 3) { puts("head: no such file"); nl(); return; }
-    }
-    for (;;) {
-        if (fd > 3) { char c = readc(); if (c == EOF) break; ch = c; }
-        else { ch = fgetc(fd); if (ch < 0) break; }
-        if (lines < n) putc((char)ch);
-        if (ch == '\n') lines++;
-    }
-    if (fd != NOFD) close(fd);
-}