Renamed internal functions _raw* -> _*_

So instead of lfs_file_rawopencfg, it's now lfs_file_opencfg_.

The "raw" prefix is annoying, doesn't really add meaning ("internal"
would have been better), and gets in the way of finding the relevant
function implementations.

I have been using _s as suffixes for unimportant name collisions in
other codebases, and it seems to work well at reducing wasted brain
cycles naming things. Adopting it here avoids the need for "raw"
prefixes.

It's quite a bit like the use of prime symbols to resolve name
collisions in math, e.g. x' = x + 1. Which is even supported in Haskell
and is quite nice there.

And the main benefit: Now if you search for the public API name, you get
the internal function first, which is probably what you care about.

Here is the exact script:

  sed -i 's/_raw\([a-z0-9_]*\)\>/_\1_/g' $(git ls-tree -r HEAD --name-only | grep '.*\.c')

bd/lfs_emubd.c

@@ -451,7 +451,7 @@ int lfs_emubd_sync(const struct lfs_config *cfg) {
 
 /// Additional extended API for driving test features ///
 
-static int lfs_emubd_rawcrc(const struct lfs_config *cfg,
+static int lfs_emubd_crc_(const struct lfs_config *cfg,
         lfs_block_t block, uint32_t *crc) {
     lfs_emubd_t *bd = cfg->context;
 
@@ -480,7 +480,7 @@ int lfs_emubd_crc(const struct lfs_config *cfg,
         lfs_block_t block, uint32_t *crc) {
     LFS_EMUBD_TRACE("lfs_emubd_crc(%p, %"PRIu32", %p)",
             (void*)cfg, block, crc);
-    int err = lfs_emubd_rawcrc(cfg, block, crc);
+    int err = lfs_emubd_crc_(cfg, block, crc);
     LFS_EMUBD_TRACE("lfs_emubd_crc -> %d", err);
     return err;
 }
@@ -491,7 +491,7 @@ int lfs_emubd_bdcrc(const struct lfs_config *cfg, uint32_t *crc) {
     uint32_t crc_ = 0xffffffff;
     for (lfs_block_t i = 0; i < cfg->block_count; i++) {
         uint32_t i_crc;
-        int err = lfs_emubd_rawcrc(cfg, i, &i_crc);
+        int err = lfs_emubd_crc_(cfg, i, &i_crc);
         if (err) {
             LFS_EMUBD_TRACE("lfs_emubd_bdcrc -> %d", err);
             return err;