Makefile: fix make dist

Commit 80a87e8a broke 'make dist' as it can't handle installing from
absolute target names. Rearranged the dependencies so the absolute name
is used for building but the relative name is use for distributing.

docs/Makefile.am

@@ -22,8 +22,11 @@
 
 AUTOMAKE_OPTIONS = foreign no-dependencies
 
-man_MANS = $(abs_builddir)/curl.1 curl-config.1
-noinst_man_MANS = mk-ca-bundle.1
+# EXTRA_DIST breaks with $(abs_builddir) so build it using this variable
+# but distribute it (using the relative file name) in the next variable
+man_MANS = $(abs_builddir)/curl.1
+noinst_man_MANS = curl.1 mk-ca-bundle.1
+dist_man_MANS = curl-config.1
 GENHTMLPAGES = curl.html curl-config.html mk-ca-bundle.html
 PDFPAGES = curl.pdf curl-config.pdf mk-ca-bundle.pdf
 MANDISTPAGES = curl.1.dist curl-config.1.dist
@@ -39,7 +42,7 @@ CLEANFILES = $(GENHTMLPAGES) $(PDFPAGES) $(MANDISTPAGES) curl.1
 
 EXTRA_DIST = MANUAL BUGS CONTRIBUTE.md FAQ FEATURES INTERNALS.md SSLCERTS.md    \
  README.win32 RESOURCES TODO TheArtOfHttpScripting THANKS VERSIONS KNOWN_BUGS   \
- BINDINGS.md $(man_MANS) HISTORY.md INSTALL INSTALL.md LICENSE-MIXING.md        \
+ BINDINGS.md HISTORY.md INSTALL INSTALL.md LICENSE-MIXING.md     \
  README.netware MAIL-ETIQUETTE HTTP-COOKIES.md SECURITY.md RELEASE-PROCEDURE    \
  SSL-PROBLEMS.md HTTP2.md ROADMAP.md CODE_OF_CONDUCT.md CODE_STYLE.md           \
  CHECKSRC.md CMakeLists.txt README.md CIPHERS.md INSTALL.cmake README.cmake     \