[docs] Fix building docs if `srcdir' != `builddir'.

`docs/reference/*' was moved one directory up in commit 237fed6.

* builds/unix/unix-def.in (PIP): Remove variable.

* configure: Create `docs' directory and copy assets from
`docs/markdown'.

* docs/README: Output directory is `reference'.
diff --git a/ChangeLog b/ChangeLog
index aa8eb98..13d490c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2020-03-22  Nikhil Ramakrishnan  <ramakrishnan.nikhil@gmail.com>
+
+	[docs] Fix building docs if `srcdir' != `builddir'.
+
+	`docs/reference/*' was moved one directory up in commit 237fed6.
+
+	* builds/unix/unix-def.in (PIP): Remove variable.
+
+	* configure: Create `docs' directory and copy assets from
+	`docs/markdown'.
+
+	* docs/README: Output directory is `reference'.
+
 2020-03-21  Nikhil Ramakrishnan  <ramakrishnan.nikhil@gmail.com>
 
 	[docwriter] Drop support for Python < 3.5.
diff --git a/builds/unix/unix-def.in b/builds/unix/unix-def.in
index 5675c24..5e04f1c 100644
--- a/builds/unix/unix-def.in
+++ b/builds/unix/unix-def.in
@@ -24,7 +24,6 @@
 # This is used for `make refdoc' and `make refdoc-venv'
 #
 PYTHON := @PYTHON@
-PIP    := @PIP@
 BIN    := bin
 
 # this is used for `make distclean' and `make install'
diff --git a/configure b/configure
index 6e7b03c..ac91a8e 100755
--- a/configure
+++ b/configure
@@ -94,10 +94,10 @@
 inode_dst=`ls -id $abs_curr_dir | awk '{print $1}'`
 
 if test $inode_src -ne $inode_dst; then
-  if test ! -d reference; then
-    mkdir reference
+  if test ! -d docs; then
+    mkdir docs
     echo "Copying documentation assets"
-    cp -R $abs_ft2_dir/docs/reference/markdown $abs_curr_dir/reference
+    cp -R $abs_ft2_dir/docs/markdown $abs_curr_dir/docs
   fi
   if test ! -r $abs_curr_dir/modules.cfg; then
     echo "Copying \`modules.cfg'"
@@ -107,7 +107,7 @@
   echo "TOP_DIR        := $abs_ft2_dir"           > Makefile
   echo "OBJ_DIR        := $abs_curr_dir"         >> Makefile
   echo "OBJ_BUILD      := \$(OBJ_DIR)"           >> Makefile
-  echo "DOC_DIR        := \$(OBJ_DIR)/reference" >> Makefile
+  echo "DOC_DIR        := \$(OBJ_DIR)/docs"      >> Makefile
   echo "FT_LIBTOOL_DIR := \$(OBJ_DIR)"           >> Makefile
   echo "ifndef FT2DEMOS"                         >> Makefile
   echo "  include \$(TOP_DIR)/Makefile"          >> Makefile
diff --git a/docs/README b/docs/README
index f82382d..d71fd37 100644
--- a/docs/README
+++ b/docs/README
@@ -1,4 +1,4 @@
-After saying `make refdoc' or `make refdoc-venv' the `site/' directory
+After saying `make refdoc' or `make refdoc-venv' the `reference/' directory
 contains the FreeType API reference.  You need Python >= 3.5 and pip to make
 this target.