[m-rev.] diff: fix documentation errors in stand-alone interface example

[Julien Fischer]

Fix documentation errors in stand-alone interface example.

samples/c_interface/standalone_c/Makefile:
samples/c_interface/standalone_c/c_main.c:
 	As above.

samples/c_interface/README:
 	s/C interface/foreign language interface/

Julien

diff --git a/samples/c_interface/README b/samples/c_interface/README
index 8c11422..68266a2 100644
--- a/samples/c_interface/README
+++ b/samples/c_interface/README
@@ -1,6 +1,6 @@

  This directory contains some examples of mixed Mercury/C programs using
-the C interface.
+the foreign language interface.

  short_example.m                 A short example of Mercury code calling C.

diff --git a/samples/c_interface/standalone_c/Makefile b/samples/c_interface/standalone_c/Makefile
index 80c76b7..3dbc40f 100755
--- a/samples/c_interface/standalone_c/Makefile
+++ b/samples/c_interface/standalone_c/Makefile
@@ -28,7 +28,7 @@
  # To build the application we first compile `mercury_lib'.  For this example
  # we don't bother installing it since that would just lead to the command
  # lines being unwieldy.  We then build the stand-alone interface, which in
-# this example is called mercury_lib_int.  Finally we compile c_main.c and
+# this example is called mercury_lib_int.  Finally, we compile c_main.c and
  # link them all together.  Specific details concerning each step in the build
  # process are discussed below.  See c_main.c for details of how to invoke the
  # stand-alone interface from C or C++ code.
@@ -37,15 +37,15 @@ MMC = mmc

  all: c_main

-# This variables holds the options required to set the grade.
-# By default this is empty so the example will build in the default grade.
+# This variable holds the options required to set the grade.
+# By default, it is empty so the example will be built in the default grade.
  # To try, for example, a deep profiling grade, set it to:
  #
  #    GRADEOPT=--grade asm_fast.gc.profdeep
  #
  GRADEOPT=

-# By default we link our application statically against the Mercury libraries.
+# By default, we link our application statically against the Mercury libraries.
  # If you wish to use the shared versions of the Mercury libraries, comment
  # out the next two lines and uncomment the two following them.
  #
@@ -82,7 +82,7 @@ CC = $(shell $(MMC) --output-cc)
  # about which macros to define for the current grade and what directories to
  # search for header files in.  This finer grained approach is useful if a
  # foreign application is written in, for example, C++ instead of C.  In that
-# case not all of the flags in output of --output-cflags may be valid for the
+# case not all of the flags output by --output-cflags may be valid for the
  # C++ compiler.

  # Ask the Mercury compiler what flags to pass to the C compiler in order to
diff --git a/samples/c_interface/standalone_c/c_main.c b/samples/c_interface/standalone_c/c_main.c
index c7247ea..26d1c9d 100644
--- a/samples/c_interface/standalone_c/c_main.c
+++ b/samples/c_interface/standalone_c/c_main.c
@@ -36,7 +36,7 @@ main(int argc, char **argv)
      ** We strongly recommend that calling this function is the first thing
      ** that your program does.
      **
-    ** The third argument to mercury_init() is address of the base of the
+    ** The third argument to mercury_init() is the address of the base of the
      ** stack.  In grades that support conservative GC is used tell the
      ** collector where to begin tracing.
      */