Fix error when ccompile by mingw32 and remove the $ from example shell script (#448)

* Fix build error with mingw32

* Remove $ from shell example

---------

Co-authored-by: hacrot3000 <hacrot3000@gmail.com>

README.md

@@ -116,19 +116,26 @@ If you have cloned the Git repository, you will first need to generate the
 `configure` file (skip this step if you have downloaded a formal release):
 
 ```bash
-$ autoreconf -i -f
+autoreconf -i -f
 ```
 
 Then:
 
 ```bash
-$ ./configure
+./configure
 ```
 
+OR with mingw32 (--disable-shared --enable-static are optional as you knew):
+
+```bash
+./configure --host=x86_64-w64-mingw32 --disable-shared --enable-static
+```
+
+
 OR for a complete install (requires bison, flex, and unixODBC):
 
 ```bash
-$ ./configure --with-unixodbc=/usr/local
+./configure --with-unixodbc=/usr/local
 ```
 
 By default, MDB Tools is linked against the copy of
@@ -155,7 +162,7 @@ with a Unicode-capable driver at /usr/local/lib/odbc/libmdbodbcW.so.
 The command `configure --help` will give you the list of mdbtools specific options.
 
 ```bash
-$ make
+make
 ```
 
 Once MDB Tools has been compiled, libmdb.[so|a] will be in the src/libmdb 
@@ -164,14 +171,14 @@ directory and the utility programs will be in the src/util directory.
 You can then install (to /usr/local by default) by running the following as root:
 
 ```bash
-$ make install
+make install
 ```
 
 Some systems will also need the ld cache to be updated after installation;
 You can do that running:
 
 ```bash 
-$ ldconfig
+ldconfig
 ```
 
 ## Hacking

configure.ac

@@ -86,7 +86,7 @@ AC_SUBST(LFLAGS)
 CFLAGS="$CFLAGS -Wall"
 LOCALE_T=locale_t
 AS_CASE([$host],
-        [*mingw*], [LDFLAGS="$LDFLAGS -no-undefined" CFLAGS="$CFLAGS -D_spawnv=spawnv"], [])
+        [*mingw*], [LDFLAGS="$LDFLAGS -no-undefined" CFLAGS="$CFLAGS -D_spawnv=_spawnv"], [])
 AC_SUBST(LOCALE_T)
 
 dnl See if iconv is present and wanted

include/mdbtools.h.in

@@ -68,6 +68,13 @@
 // M$VC see http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc
 #define MDB_DEPRECATED(type, funcname) type __attribute__((deprecated)) funcname
 
+#ifdef __MINGW32__
+  #include <stdlib.h>
+  #ifndef locale_t
+    typedef _locale_t locale_t;
+  #endif
+#endif
+
 typedef @LOCALE_T@ mdb_locale_t;
 
 enum {