edify extensions for OTA package installation, part 2

Adds more edify functions for OTAs:

  is_mounted getprop apply_patch apply_patch_check apply_patch_space
  write_raw_image write_firmware_image package_extract_file

This allows us to install radios, hboots, boot images, and install
incremental OTA packages.

Fixes a couple of dumb bugs in edify itself:

  - we were doubling the size of the function table each time it was
    *not* full, rather than each time it was full

  - "no such function" errors weren't visible to the parser, so they
    didn't prevent execution of the script.

1 files changed, 4 insertions, 3 deletions

diff --git a/edify/main.c b/edify/main.c
index c959683..7da89e2 100644
--- a/edify/main.c
+++ b/edify/main.c
@@ -153,10 +153,11 @@ int main(int argc, char** argv) {
   buffer[size] = '\0';
 
   Expr* root;
+  int error_count = 0;
   yy_scan_bytes(buffer, size);
-  int error = yyparse(&root);
-  printf("parse returned %d\n", error);
-  if (error == 0) {
+  int error = yyparse(&root, &error_count);
+  printf("parse returned %d; %d errors encountered\n", error, error_count);
+  if (error == 0 || error_count > 0) {
     char* result = Evaluate(NULL, root);
     if (result == NULL) {
       char* errmsg = GetError();