dpkg: use busybox for rm and tar

packages/dpkg/extract.c.patch

@@ -1,9 +1,16 @@
-Remove tar options not supported by busybox tar.
+diff -uNr dpkg-1.19.4/dpkg-deb/extract.c dpkg-1.19.4.mod/dpkg-deb/extract.c
-
+--- dpkg-1.19.4/dpkg-deb/extract.c	2019-01-23 04:31:39.000000000 +0200
-diff -u -r ../dpkg-1.17.10/dpkg-deb/extract.c ./dpkg-deb/extract.c
++++ dpkg-1.19.4.mod/dpkg-deb/extract.c	2019-05-12 21:51:55.872339882 +0300
---- ../dpkg-1.17.10/dpkg-deb/extract.c	2014-06-04 02:02:54.000000000 +0200
+@@ -309,7 +309,7 @@
-+++ ./dpkg-deb/extract.c	2014-07-01 16:40:02.785848137 +0200
+     if (!c3) {
-@@ -327,14 +327,20 @@
+       struct command cmd;
+ 
+-      command_init(&cmd, TAR, "tar");
++      command_init(&cmd, "busybox", "tar");
+       command_add_arg(&cmd, "tar");
+ 
+       if ((taroption & DPKG_TAR_LIST) && (taroption & DPKG_TAR_EXTRACT))
+@@ -321,14 +321,20 @@
        else
          internerr("unknown or missing tar action '%d'", taroption);
  

packages/dpkg/help.c.patch

@@ -0,0 +1,13 @@
+diff -uNr dpkg-1.19.4/src/help.c dpkg-1.19.4.mod/src/help.c
+--- dpkg-1.19.4/src/help.c	2019-01-23 14:04:28.000000000 +0200
++++ dpkg-1.19.4.mod/src/help.c	2019-05-12 22:08:27.729956232 +0300
+@@ -114,8 +114,7 @@
+ void checkpath(void) {
+   static const char *const prog_list[] = {
+     DEFAULTSHELL,
+-    RM,
+-    TAR,
++    "busybox",
+     DIFF,
+     BACKEND,
+     /* Mac OS X uses dyld (Mach-O) instead of ld.so (ELF), and does not have

packages/dpkg/lib-dpkg-path-remove.c.patch

@@ -18,3 +18,12 @@ diff -u -r ../dpkg-1.18.2/lib/dpkg/path-remove.c ./lib/dpkg/path-remove.c
  		return;
  	if (errno == ENOTDIR) {
  		/* Either it's a file, or one of the path components is. If
+@@ -149,7 +149,7 @@
+ 
+ 	pid = subproc_fork();
+ 	if (pid == 0) {
+-		execlp(RM, "rm", "-rf", "--", pathname, NULL);
++		execlp("@TERMUX_PREFIX@/bin/busybox", "rm", "-rf", "--", pathname, NULL);
+ 		ohshite(_("unable to execute %s (%s)"),
+ 		        _("rm command for cleanup"), RM);
+ 	}