FEAT: initial implementation of the PDF codec

Author: Oldes

make/rebol3.nest

@@ -257,6 +257,7 @@ mezz-lib-files: [
 ;	%mezz/codec-xml.reb
 ;	%mezz/codec-html-entities.reb
 ;	%mezz/codec-wav.reb
+;	%mezz/codec-pdf.reb
 ;	%mezz/codec-swf.reb
 ;	%mezz/codec-image.reb ; included using: include-image-os-codec (windows and macos only so far)
 ;	%mezz/codec-image-ext.reb ; image codec extensions (codecs/png/size?)
@@ -499,6 +500,7 @@ include-codec-ico: [
 ]
 include-codec-json:          [mezz-lib-files:  %mezz/codec-json.reb         ]
 include-codec-xml:           [mezz-lib-files:  %mezz/codec-xml.reb          ]
+include-codec-pdf:           [mezz-lib-files:  %mezz/codec-pdf.reb config: INCLUDE_PNG_FILTER] ; pdf may use special png pre-compression
 include-codec-swf:           [mezz-lib-files:  %mezz/codec-swf.reb          ]
 include-codec-wav:           [mezz-lib-files:  %mezz/codec-wav.reb          ]
 include-codec-unixtime:      [mezz-lib-files:  %mezz/codec-unixtime.reb     ]
@@ -556,6 +558,7 @@ include-rebol-bulk: [
 	:include-view
 	:include-midi
 
+	:include-codec-pdf
 	:include-codec-swf
 	:include-codec-gzip
 	:include-codec-zip
@@ -579,6 +582,8 @@ include-rebol-bulk: [
 
 	:include-dialecting  ;`delect`
 
+	config: INCLUDE_PNG_FILTER ; includes `filter` and `unfilter` natives
+
 	;- for tests:
 	;:include-test-extension
 	;- not recommanded: