Fixes to autotools build to respect mn_int.cpp files (#186)

* Fixes to autotools build to respect mn_int.cpp files

* Changes following Luis' code review.

samples/Makefile

@@ -117,6 +117,7 @@ endif
 
 PREFIX = /usr/local/lib
 LINK.cc += -rpath $(PREFIX) -L$(PREFIX)
+COMPILE.cc += -I$(top_srcdir)/include -I$(top_srcdir)/include/exiv2
 
 # ******************************************************************************
 # Rules

src/Makefile

@@ -57,29 +57,31 @@ include $(top_srcdir)/config/config.mk
 # ******************************************************************************
 # Source files
 
-# Add standalone C++ header files to this list
+# exiv2 command-line program C++ header files
 CCHDR =  exiv2.hpp             \
          config.h              \
          exv_conf.h            \
          xmp_exiv2.hpp         \
          version.hpp
 
-# Add library C++ source files to this list
+# library C++ source files
 CCSRC =  basicio.cpp           \
-	 bmpimage.cpp          \
          bigtiffimage.cpp      \
-	 canonmn.cpp           \
+         bmpimage.cpp          \
-	 casiomn.cpp           \
+         canonmn_int.cpp       \
+         casiomn_int.cpp       \
          convert.cpp           \
+         cr2image_int.cpp      \
          cr2image.cpp          \
+         crwimage_int.cpp      \
          crwimage.cpp          \
          datasets.cpp          \
          easyaccess.cpp        \
          epsimage.cpp          \
          error.cpp             \
          exif.cpp              \
+         fujimn_int.cpp        \
          futils.cpp            \
-	 fujimn.cpp            \
          gifimage.cpp          \
          http.cpp              \
          image.cpp             \
@@ -87,42 +89,48 @@ CCSRC =  basicio.cpp       \
          iptc.cpp              \
          jp2image.cpp          \
          jpgimage.cpp          \
-	 makernote.cpp         \
+         makernote_int.cpp     \
          metadatum.cpp         \
-	 minoltamn.cpp         \
+         minoltamn_int.cpp     \
          mrwimage.cpp          \
-	 nikonmn.cpp           \
+         nikonmn_int.cpp       \
-	 olympusmn.cpp         \
+         olympusmn_int.cpp     \
+         orfimage_int.cpp      \
          orfimage.cpp          \
-	 panasonicmn.cpp       \
+         pgfimage.cpp          \
-	 pentaxmn.cpp          \
+         preview.cpp           \
-	 pgfimage.cpp
+         panasonicmn_int.cpp   \
-ifdef HAVE_LIBZ
+         pentaxmn_int.cpp      \
-CCSRC += pngimage.cpp      \
-	 pngchunk.cpp
-endif
-CCSRC += preview.cpp       \
          properties.cpp        \
          psdimage.cpp          \
          rafimage.cpp          \
+         rw2image_int.cpp      \
          rw2image.cpp          \
-	 samsungmn.cpp
+         samsungmn_int.cpp     \
-ifdef USE_SSH
+         sigmamn_int.cpp       \
-CCSRC += ssh.cpp
+         sonymn_int.cpp        \
-endif
-CCSRC += sigmamn.cpp       \
-	 sonymn.cpp            \
          tags.cpp              \
          tgaimage.cpp          \
-	 tiffcomposite.cpp     \
+         tiffcomposite_int.cpp \
+         tiffimage_int.cpp     \
          tiffimage.cpp         \
-	 tiffvisitor.cpp       \
+         tiffvisitor_int.cpp   \
          types.cpp             \
          value.cpp             \
          version.cpp           \
          webpimage.cpp         \
          xmp.cpp               \
          xmpsidecar.cpp
+
+ifdef HAVE_LIBZ
+CCSRC += pngimage.cpp          \
+         pngchunk_int.cpp
+endif
+
+ifdef USE_SSH
+CCSRC += ssh.cpp
+endif
+
 ifdef ENABLE_VIDEO
 CCSRC += asfvideo.cpp          \
          matroskavideo.cpp     \
@@ -131,7 +139,7 @@ CCSRC += asfvideo.cpp      \
          utilsvideo.cpp
 endif
 
-# Add library C source files to this list
+# C source files to this list
 EXIVCSRC  =
 ifndef HAVE_TIMEGM
 CSRC =   localtime.c