xbps-src: update-check: handle underscores in upstream version string

common/xbps-src/shutils/update_check.sh

@@ -75,6 +75,7 @@ update_check() {
         curl -A "xbps-src-update-check/$XBPS_SRC_VERSION" --max-time 10 -Lsk "$url" |
             grep -Po -i "$rx"
     done |
+    tr _ . |
     sort -Vu |
     { 
         grep . || echo "NO VERSION found for $original_pkgname" 1>&2

srcpkgs/iverilog/update

@@ -1,3 +1,2 @@
 site="https://api.github.com/repos/steveicarus/$pkgname/tags"
 pattern='"name":\s*"v\K[\d_]+(?=")'
-version=${version//./_}

srcpkgs/lowdown/update

@@ -1,4 +1 @@
-# This pattern is incomplete, it finds out the versions like '0_3_1' but
-# comparison with 'xbps-uhelper cmpver' results in it being always treated
-# as a lower version
 pattern="VERSION_\K[\d_]+"

srcpkgs/portaudio/update

@@ -1,3 +1,2 @@
-version="${version/./_}"
 site='http://www.portaudio.com/download.html'
 pattern='archives/pa_stable_v\K[0-9_]+(?=\.tgz)'